Zhang Dawen, Xie Ping, Liu Yaqin, Chen Jun, Wen Zhourui
Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Donghu South Road 7, Wuhan 430072, People's Republic of China.
Ecotoxicol Environ Saf. 2009 Feb;72(2):466-72. doi: 10.1016/j.ecoenv.2008.05.014. Epub 2008 Jul 16.
In this paper, spatial and temporal variations of three common microcystins (MC-RR, MC-YR, and MC-LR) in the hepatopancreas of a freshwater snail (Bellamya aeruginosa) were studied monthly in two bays of Lake Taihu. Microcystins (MCs) concentration in hepatopancreas was quantified by liquid chromatography-mass spectrometry (LC-MS). The MCs concentrations in hepatopancreas were higher at Site 1 than those at other sites, which was in agreement with the changes of intracellular MCs concentrations in the water column. There was a significant correlation between MCs concentrations in the hepatopancreas and that in the seston, suggesting that spatial variances of MCs concentrations in hepatopancreas among the five sites were due to spatial changes of toxic Microcystis cells in the water column. PCCA indicates that in addition to Microcystis, other factors (e.g., water temperature) also substantially affected the accumulation of MCs in hepatopancreas of the snail.
本文每月在太湖的两个湖湾对淡水螺（铜锈环棱螺）肝胰腺中三种常见微囊藻毒素（MC-RR、MC-YR和MC-LR）的时空变化进行了研究。通过液相色谱-质谱联用仪（LC-MS）对肝胰腺中的微囊藻毒素（MCs）浓度进行定量。1号位点肝胰腺中的MCs浓度高于其他位点，这与水柱中细胞内MCs浓度的变化一致。肝胰腺中的MCs浓度与悬浮颗粒中的MCs浓度之间存在显著相关性，这表明五个位点间肝胰腺中MCs浓度的空间差异是由于水柱中有毒微囊藻细胞的空间变化所致。主成分对应分析（PCCA）表明，除微囊藻外，其他因素（如水温）也对螺肝胰腺中MCs的积累有显著影响。
